#2921B3#2921B3

#2921B3 is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.6% C 0.214 H 272.4°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#2921B3
RGB	rgb(41, 33, 179)
HSL	hsl(243, 69%, 42%)
HSV	hsv(243, 82%, 70%)
CMYK	cmyk(77.1%, 81.6%, 0%, 29.8%)
CIE-LAB	lab(26.19, 50.92, -74.06)
CIE-LCH	lch(26.19, 89.87, 304.51°)
OKLab	oklab(38.61% 0.0088 -0.2143)
OKLCH	oklch(38.61% 0.214 272.4)
XYZ	xyz(9.5923, 4.8128, 43.0625)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2921B3 #ABB321

analogous

#2162B3 #2921B3 #7221B3

triadic

#2921B3 #B32921 #21B329

tetradic

#2921B3 #B32162 #ABB321 #21B372

square

#2921B3 #B32162 #ABB321 #21B372

split-complementary

#2921B3 #B37221 #62B321

monochromatic

#110E4C #1D177F #2921B3 #4037DA #716BE4

Accessibility & contrast

On white

10.70

#2921B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#2921B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2921B3

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2921B3	#FFFFFF	#000000	##FFFFFF
##2921B3	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B7

Deuteranopia (green-blind)

#0037B1

Tritanopia (blue-blind)

#004F6B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2921b3;
/* rgb */ color: rgb(41, 33, 179);
/* oklch */ color: oklch(38.6% 0.214 272.4);

Tailwind

colors: {
  custom: {
    50: '#7c61cb',
    500: '#2921b3',
    950: '#000000',
  },
}

SCSS

$custom: #2921b3;
$custom-light: #7c61cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2921b3",
  "rgb": {
    "r": 41,
    "g": 33,
    "b": 179
  },
  "hsl": {
    "h": 243.288,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.38613,
    "c": 0.21446,
    "h": 272.4
  },
  "luminance": 0.04814
}

Semantic roles & 50–950 ramp

primary

#2921B3

secondary

#C4CA66

accent

#EC3CE2

background

#F8F5FC

surface

#EFEAF9

border

#CAC6D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #2921B3

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →